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Internal combustion engine control device

A technology of a control device and an internal combustion engine, which is applied in the directions of engine control, fuel injection control, electrical control, etc., can solve the problems of inability to control the inverse model torque of the internal combustion engine, and the inability of the actuator to accurately reflect the performance of the internal combustion engine.

Inactive Publication Date: 2011-07-13
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, in the case where the above-mentioned inverse model of the internal combustion engine is designed on the premise of homogeneous combustion, the inverse model of the internal combustion engine cannot be used for torque control during stratified combustion.
[0006] As described above, the torque request control has several weak points, and due to this weakness, the situation that the control amount of the actuator cannot accurately reflect the request related to the performance of the internal combustion engine arises.

Method used

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Embodiment approach 1

[0119] Below, use Figure 1 to Figure 4 Each figure of FIG. 1 illustrates Embodiment 1 of the present invention.

[0120] First, specifications of the internal combustion engine according to the present embodiment will be described as a premise of the present embodiment. The internal combustion engine according to the present embodiment is a spark ignition type internal combustion engine, and includes an actuator for adjusting the amount of intake air, ignition timing, and air-fuel ratio. In addition, it is an internal combustion engine that normally performs operation of homogeneous combustion, but can also perform operation of stratified combustion under limited conditions such as extremely low load. In addition, the specifications of the internal combustion engine according to this embodiment are also the same specifications as those of Embodiments 2 to 9 described later.

[0121] The control device of this embodiment is configured to use figure 1 The block diagram repre...

Embodiment approach 2

[0170] Next, use figure 1 , Figure 5 and Figure 6 Embodiment 2 of the present invention will be described.

[0171] The overall structure of the control device of this embodiment is the same as Embodiment 1, with figure 1 The block diagram representation. The difference between the control device of the present embodiment and the control device of the first embodiment lies in the function of the switching instruction unit 58 which is one element constituting the control device. Indicates the configuration of the switching instruction unit 58 according to the present embodiment is Figure 5 block diagram. Refer to the following figure 1 and Figure 5 The structure and function of the switching instructing unit 58 which is a characteristic of the present embodiment will be described.

[0172] The functional feature of the switching instructing unit 58 according to this embodiment is that it can suppress the switching of the control of the actuators 2, 4, 6 from the con...

Embodiment approach 3

[0195] Next, use figure 1 and Figure 7 Embodiment 3 of the present invention will be described.

[0196] The overall structure of the control device of this embodiment is the same as Embodiment 1, with figure 1 The block diagram representation. The difference between the control device of the present embodiment and the control device of the first embodiment lies in the function of the switching instruction unit 58 which is one element constituting the control device. Indicates the configuration of the switching instruction unit 58 according to the present embodiment is Figure 7 block diagram. Refer to the following figure 1 and Figure 7 The structure and function of the switching instructing unit 58 which is a characteristic of the present embodiment will be described.

[0197] Functional features of the switching instruction unit 58 according to the present embodiment are common to those of the switching instruction unit 58 according to the second embodiment. Howev...

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Abstract

Provided is an internal combustion engine control device which can compensate a weak point in the so-called torque-demand control so as to accurately reflect a request for the internal combustion engine performance in a control amount of each actuator. Requested values of a torque, efficiency, and an air-fuel ratio and engine information are inputted to an engine inverse model (30) so as to calculate actuator request values for realizing the requested values by using the engine inverse model (30). Moreover, an actuator direct request value is also acquired for each of the actuators (2, 4, 6). Control of the actuators (2, 4, 6) can be switched between control based on the actuator request values and control based on the actuator direct request values.

Description

technical field [0001] The present invention relates to a control device for an internal combustion engine, and more specifically, to a control device that realizes requirements related to various performances of the internal combustion engine through coordinated control of a plurality of actuators. Background technique [0002] The action of the internal combustion engine is controlled by a number of actuators. In the case of a spark ignition type internal combustion engine, the operation can be controlled by adjusting the intake air amount of the throttle valve, adjusting the ignition timing of the ignition device, and adjusting the air-fuel ratio of the fuel supply device. The control amount (or operation amount) of the above-mentioned plurality of actuators can be determined individually for each actuator. However, according to the torque request control disclosed in Japanese Patent Application Laid-Open No. 10-325348, the torque control accuracy can be improved by coop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D45/00F02D9/02F02D41/04F02D43/00F02P5/15
CPCF02D11/105F02D2250/18F02D37/02F02D41/0002F02D2041/1434F02D9/02F02D41/04F02D43/00F02D45/00
Inventor 大冢郁副岛慎一河井圭助田中宏幸仲田勇人加藤直人
Owner TOYOTA JIDOSHA KK
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